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English Senior High

この問題の解説で大切な部分は何処か教えて欲しいです🙏

Part 2 Reading 実 践/演習 次の英文を読んで,a~eについて本文の内容と一致するものを①~③の中から1つずつ選びなさ loog sui 1 い。 I have to make a speech in the next Englishi class. I decided to talk about my own town, so I started looking for good stories about it. First I used the Internet and entered the name of the town. I thought I could get a lot of good information very quickly, but I couldn't. There were some homepages about my town, but I found some were wrong and others were the stories we all already knew. Next I went to the library. I tried to find useful books. but again I couldn't. I asked the He said, “Sorry, we have few, man at the counter if there were any books about the town. but what do you want to know ?” So I explained to him about my speech. Then he said, 1 can tell you all the things I know about our town.”. He has lived here for sixty years and knows a lot about the town. Ilearned many things from him. I will be able to give an interesting speech. la 1elg la 0a speech 出 6angalaateland oaery ご愛a.I began to collect {2 the information about my town. 人丈さ 具 ふこ Sn aF13 an English class の d e 言0no woRO時 hatuhdy s 下ab. I got{ 2 a lot of } useful stories from the Internet.dh 内 が enjoyed tal③ good oticO ( heis lem in his garden. "They often made jokes with each other しhish 液 O1"Do you know about my speech ?"npdea Shis ffc.I said to the man in the library, {2 “Do you know about the town ?" lske lODo you have any books about the town ?" byでda 戻りでFO he had lived in the town for a long time. ad. The man knew about the town well because { 2 he worked for the library. by plane. 土制効 人(O the Internet. 3 he learned many things from the books. パーモーエニ e. I will make a good speech thanks to { 2 the books in the library. で ドンに行 ③ the man in the library. れ ヒント thanks to ~は 「~のおかげで」。良いスピーチができそうなのは何(誰) のおかげ? おます で い場 の 下 ム ま合 stwals

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Mathematics Senior High

値の範囲なのに学校の先生が値そのものを解にしてきたのですが、「値の範囲」と聞かれている場合は値そのものでも解として良いのでしょうか?

Date 3 bを定数とする.2次関数 f(x)=x?-ax+bがあり, f(x)の最小値は1である。 fial:.(2-ミたb (3) 0SxS2における 「(x) の最大値を M.最小値をm とするとき, M-m=3となる4 うなaの値の範囲舞を求めよ。 fa)a長大について。 」く」、町ち、Q<2~てき 22で、M--2abt4 をろ。 [2] a-2aてき、X-d-2でM:6をとる。 L3] 」<、『ち、2<aのてき、 2:aaて3、M=b。 タ=0でM- bをとる。 IJ~3] り、 ax2arき、M- - 2atb+f、 23aaてき、M:b。 fa)の最外について、 [4]く0-門ちら、axoaとき、 ス:0でm:bもとろ、 15J 05as4 のとき、 m=_パtb M=-2bty m=b m=-2al6ty M=b 2. 1 Jの回り、場合分の種類は、 a<0、0ミa<2.2:aき4、4<aの 4つの場合に分けらゃるの IJ ax0aでき、 M-m=-2at4 - 2a4=3を解き、 aニっで水oを満可不適。 1270Sa~2のき A-m: 4-20+4 - 204-3年解き、ハ4さ23 ベ-4-213は02a<2を流たす。 よ3]2<as4入とき M- a。 a 全でmに-参わをる。 c4] 4<anとき、 スニ見で mミ-2atb+4をる。 I4]~16より- axoaてき、m=b 0saご4aてき、m:-な 4<aのてき、mニー2atbe4tとる。 (ポント)東大一外では、実数の特囲 mミ 4 るを解2のこゴ23 a:2131は-220と4を満たす。 4]4anてき、 に注意して、特対値、ように場合 に分けることが重要! M-m 2a-4 2a-4:3を件きa で4くaを満たさない [日~44#り、a=4-23、2昼

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